diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c b/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c index 5ec005e636aa..dbd2c2c4d346 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c @@ -22,6 +22,54 @@ #define SPARX5_IS2_LOOKUPS 4 +/* IS2 port keyset selection control */ + +/* IS2 non-ethernet traffic type keyset generation */ +enum vcap_is2_port_sel_noneth { + VCAP_IS2_PS_NONETH_MAC_ETYPE, + VCAP_IS2_PS_NONETH_CUSTOM_1, + VCAP_IS2_PS_NONETH_CUSTOM_2, + VCAP_IS2_PS_NONETH_NO_LOOKUP +}; + +/* IS2 IPv4 unicast traffic type keyset generation */ +enum vcap_is2_port_sel_ipv4_uc { + VCAP_IS2_PS_IPV4_UC_MAC_ETYPE, + VCAP_IS2_PS_IPV4_UC_IP4_TCP_UDP_OTHER, + VCAP_IS2_PS_IPV4_UC_IP_7TUPLE, +}; + +/* IS2 IPv4 multicast traffic type keyset generation */ +enum vcap_is2_port_sel_ipv4_mc { + VCAP_IS2_PS_IPV4_MC_MAC_ETYPE, + VCAP_IS2_PS_IPV4_MC_IP4_TCP_UDP_OTHER, + VCAP_IS2_PS_IPV4_MC_IP_7TUPLE, + VCAP_IS2_PS_IPV4_MC_IP4_VID, +}; + +/* IS2 IPv6 unicast traffic type keyset generation */ +enum vcap_is2_port_sel_ipv6_uc { + VCAP_IS2_PS_IPV6_UC_MAC_ETYPE, + VCAP_IS2_PS_IPV6_UC_IP_7TUPLE, + VCAP_IS2_PS_IPV6_UC_IP6_STD, + VCAP_IS2_PS_IPV6_UC_IP4_TCP_UDP_OTHER, +}; + +/* IS2 IPv6 multicast traffic type keyset generation */ +enum vcap_is2_port_sel_ipv6_mc { + VCAP_IS2_PS_IPV6_MC_MAC_ETYPE, + VCAP_IS2_PS_IPV6_MC_IP_7TUPLE, + VCAP_IS2_PS_IPV6_MC_IP6_VID, + VCAP_IS2_PS_IPV6_MC_IP6_STD, + VCAP_IS2_PS_IPV6_MC_IP4_TCP_UDP_OTHER, +}; + +/* IS2 ARP traffic type keyset generation */ +enum vcap_is2_port_sel_arp { + VCAP_IS2_PS_ARP_MAC_ETYPE, + VCAP_IS2_PS_ARP_ARP, +}; + static struct sparx5_vcap_inst { enum vcap_type vtype; /* type of vcap */ int vinst; /* instance number within the same type */ @@ -58,6 +106,296 @@ static struct sparx5_vcap_inst { }, }; +/* Await the super VCAP completion of the current operation */ +static void sparx5_vcap_wait_super_update(struct sparx5 *sparx5) +{ + u32 value; + + read_poll_timeout(spx5_rd, value, + !VCAP_SUPER_CTRL_UPDATE_SHOT_GET(value), 500, 10000, + false, sparx5, VCAP_SUPER_CTRL); +} + +/* Initializing a VCAP address range: only IS2 for now */ +static void _sparx5_vcap_range_init(struct sparx5 *sparx5, + struct vcap_admin *admin, + u32 addr, u32 count) +{ + u32 size = count - 1; + + spx5_wr(VCAP_SUPER_CFG_MV_NUM_POS_SET(0) | + VCAP_SUPER_CFG_MV_SIZE_SET(size), + sparx5, VCAP_SUPER_CFG); + spx5_wr(VCAP_SUPER_CTRL_UPDATE_CMD_SET(VCAP_CMD_INITIALIZE) | + VCAP_SUPER_CTRL_UPDATE_ENTRY_DIS_SET(0) | + VCAP_SUPER_CTRL_UPDATE_ACTION_DIS_SET(0) | + VCAP_SUPER_CTRL_UPDATE_CNT_DIS_SET(0) | + VCAP_SUPER_CTRL_UPDATE_ADDR_SET(addr) | + VCAP_SUPER_CTRL_CLEAR_CACHE_SET(true) | + VCAP_SUPER_CTRL_UPDATE_SHOT_SET(true), + sparx5, VCAP_SUPER_CTRL); + sparx5_vcap_wait_super_update(sparx5); +} + +/* Initializing VCAP rule data area */ +static void sparx5_vcap_block_init(struct sparx5 *sparx5, + struct vcap_admin *admin) +{ + _sparx5_vcap_range_init(sparx5, admin, admin->first_valid_addr, + admin->last_valid_addr - + admin->first_valid_addr); +} + +/* Get the keyset name from the sparx5 VCAP model */ +static const char *sparx5_vcap_keyset_name(struct net_device *ndev, + enum vcap_keyfield_set keyset) +{ + struct sparx5_port *port = netdev_priv(ndev); + + return port->sparx5->vcap_ctrl->stats->keyfield_set_names[keyset]; +} + +/* Check if this is the first lookup of IS2 */ +static bool sparx5_vcap_is2_is_first_chain(struct vcap_rule *rule) +{ + return (rule->vcap_chain_id >= SPARX5_VCAP_CID_IS2_L0 && + rule->vcap_chain_id < SPARX5_VCAP_CID_IS2_L1) || + ((rule->vcap_chain_id >= SPARX5_VCAP_CID_IS2_L2 && + rule->vcap_chain_id < SPARX5_VCAP_CID_IS2_L3)); +} + +/* Set the narrow range ingress port mask on a rule */ +static void sparx5_vcap_add_range_port_mask(struct vcap_rule *rule, + struct net_device *ndev) +{ + struct sparx5_port *port = netdev_priv(ndev); + u32 port_mask; + u32 range; + + range = port->portno / BITS_PER_TYPE(u32); + /* Port bit set to match-any */ + port_mask = ~BIT(port->portno % BITS_PER_TYPE(u32)); + vcap_rule_add_key_u32(rule, VCAP_KF_IF_IGR_PORT_MASK_SEL, 0, 0xf); + vcap_rule_add_key_u32(rule, VCAP_KF_IF_IGR_PORT_MASK_RNG, range, 0xf); + vcap_rule_add_key_u32(rule, VCAP_KF_IF_IGR_PORT_MASK, 0, port_mask); +} + +/* Set the wide range ingress port mask on a rule */ +static void sparx5_vcap_add_wide_port_mask(struct vcap_rule *rule, + struct net_device *ndev) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct vcap_u72_key port_mask; + u32 range; + + /* Port bit set to match-any */ + memset(port_mask.value, 0, sizeof(port_mask.value)); + memset(port_mask.mask, 0xff, sizeof(port_mask.mask)); + range = port->portno / BITS_PER_BYTE; + port_mask.mask[range] = ~BIT(port->portno % BITS_PER_BYTE); + vcap_rule_add_key_u72(rule, VCAP_KF_IF_IGR_PORT_MASK, &port_mask); +} + +/* API callback used for validating a field keyset (check the port keysets) */ +static enum vcap_keyfield_set +sparx5_vcap_validate_keyset(struct net_device *ndev, + struct vcap_admin *admin, + struct vcap_rule *rule, + struct vcap_keyset_list *kslist, + u16 l3_proto) +{ + if (!kslist || kslist->cnt == 0) + return VCAP_KFS_NO_VALUE; + /* for now just return whatever the API suggests */ + return kslist->keysets[0]; +} + +/* API callback used for adding default fields to a rule */ +static void sparx5_vcap_add_default_fields(struct net_device *ndev, + struct vcap_admin *admin, + struct vcap_rule *rule) +{ + const struct vcap_field *field; + + field = vcap_lookup_keyfield(rule, VCAP_KF_IF_IGR_PORT_MASK); + if (field && field->width == SPX5_PORTS) + sparx5_vcap_add_wide_port_mask(rule, ndev); + else if (field && field->width == BITS_PER_TYPE(u32)) + sparx5_vcap_add_range_port_mask(rule, ndev); + else + pr_err("%s:%d: %s: could not add an ingress port mask for: %s\n", + __func__, __LINE__, netdev_name(ndev), + sparx5_vcap_keyset_name(ndev, rule->keyset)); + /* add the lookup bit */ + if (sparx5_vcap_is2_is_first_chain(rule)) + vcap_rule_add_key_bit(rule, VCAP_KF_LOOKUP_FIRST_IS, VCAP_BIT_1); + else + vcap_rule_add_key_bit(rule, VCAP_KF_LOOKUP_FIRST_IS, VCAP_BIT_0); +} + +/* API callback used for erasing the vcap cache area (not the register area) */ +static void sparx5_vcap_cache_erase(struct vcap_admin *admin) +{ + memset(admin->cache.keystream, 0, STREAMSIZE); + memset(admin->cache.maskstream, 0, STREAMSIZE); + memset(admin->cache.actionstream, 0, STREAMSIZE); + memset(&admin->cache.counter, 0, sizeof(admin->cache.counter)); +} + +/* API callback used for writing to the VCAP cache */ +static void sparx5_vcap_cache_write(struct net_device *ndev, + struct vcap_admin *admin, + enum vcap_selection sel, + u32 start, + u32 count) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct sparx5 *sparx5 = port->sparx5; + u32 *keystr, *mskstr, *actstr; + int idx; + + keystr = &admin->cache.keystream[start]; + mskstr = &admin->cache.maskstream[start]; + actstr = &admin->cache.actionstream[start]; + switch (sel) { + case VCAP_SEL_ENTRY: + for (idx = 0; idx < count; ++idx) { + /* Avoid 'match-off' by setting value & mask */ + spx5_wr(keystr[idx] & mskstr[idx], sparx5, + VCAP_SUPER_VCAP_ENTRY_DAT(idx)); + spx5_wr(~mskstr[idx], sparx5, + VCAP_SUPER_VCAP_MASK_DAT(idx)); + } + break; + case VCAP_SEL_ACTION: + for (idx = 0; idx < count; ++idx) + spx5_wr(actstr[idx], sparx5, + VCAP_SUPER_VCAP_ACTION_DAT(idx)); + break; + case VCAP_SEL_ALL: + pr_err("%s:%d: cannot write all streams at once\n", + __func__, __LINE__); + break; + default: + break; + } +} + +/* API callback used for reading from the VCAP into the VCAP cache */ +static void sparx5_vcap_cache_read(struct net_device *ndev, + struct vcap_admin *admin, + enum vcap_selection sel, u32 start, + u32 count) +{ + /* this will be added later */ +} + +/* API callback used for initializing a VCAP address range */ +static void sparx5_vcap_range_init(struct net_device *ndev, + struct vcap_admin *admin, u32 addr, + u32 count) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct sparx5 *sparx5 = port->sparx5; + + _sparx5_vcap_range_init(sparx5, admin, addr, count); +} + +/* API callback used for updating the VCAP cache */ +static void sparx5_vcap_update(struct net_device *ndev, + struct vcap_admin *admin, enum vcap_command cmd, + enum vcap_selection sel, u32 addr) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct sparx5 *sparx5 = port->sparx5; + bool clear; + + clear = (cmd == VCAP_CMD_INITIALIZE); + spx5_wr(VCAP_SUPER_CFG_MV_NUM_POS_SET(0) | + VCAP_SUPER_CFG_MV_SIZE_SET(0), sparx5, VCAP_SUPER_CFG); + spx5_wr(VCAP_SUPER_CTRL_UPDATE_CMD_SET(cmd) | + VCAP_SUPER_CTRL_UPDATE_ENTRY_DIS_SET((VCAP_SEL_ENTRY & sel) == 0) | + VCAP_SUPER_CTRL_UPDATE_ACTION_DIS_SET((VCAP_SEL_ACTION & sel) == 0) | + VCAP_SUPER_CTRL_UPDATE_CNT_DIS_SET((VCAP_SEL_COUNTER & sel) == 0) | + VCAP_SUPER_CTRL_UPDATE_ADDR_SET(addr) | + VCAP_SUPER_CTRL_CLEAR_CACHE_SET(clear) | + VCAP_SUPER_CTRL_UPDATE_SHOT_SET(true), + sparx5, VCAP_SUPER_CTRL); + sparx5_vcap_wait_super_update(sparx5); +} + +/* API callback used for moving a block of rules in the VCAP */ +static void sparx5_vcap_move(struct net_device *ndev, struct vcap_admin *admin, + u32 addr, int offset, int count) +{ + /* this will be added later */ +} + +/* Provide port information via a callback interface */ +static int sparx5_port_info(struct net_device *ndev, enum vcap_type vtype, + int (*pf)(void *out, int arg, const char *fmt, ...), + void *out, int arg) +{ + /* this will be added later */ + return 0; +} + +/* API callback operations: only IS2 is supported for now */ +static struct vcap_operations sparx5_vcap_ops = { + .validate_keyset = sparx5_vcap_validate_keyset, + .add_default_fields = sparx5_vcap_add_default_fields, + .cache_erase = sparx5_vcap_cache_erase, + .cache_write = sparx5_vcap_cache_write, + .cache_read = sparx5_vcap_cache_read, + .init = sparx5_vcap_range_init, + .update = sparx5_vcap_update, + .move = sparx5_vcap_move, + .port_info = sparx5_port_info, +}; + +/* Enable lookups per port and set the keyset generation: only IS2 for now */ +static void sparx5_vcap_port_key_selection(struct sparx5 *sparx5, + struct vcap_admin *admin) +{ + int portno, lookup; + u32 keysel; + + /* enable all 4 lookups on all ports */ + for (portno = 0; portno < SPX5_PORTS; ++portno) + spx5_wr(ANA_ACL_VCAP_S2_CFG_SEC_ENA_SET(0xf), sparx5, + ANA_ACL_VCAP_S2_CFG(portno)); + + /* all traffic types generate the MAC_ETYPE keyset for now in all + * lookups on all ports + */ + keysel = ANA_ACL_VCAP_S2_KEY_SEL_KEY_SEL_ENA_SET(true) | + ANA_ACL_VCAP_S2_KEY_SEL_NON_ETH_KEY_SEL_SET(VCAP_IS2_PS_NONETH_MAC_ETYPE) | + ANA_ACL_VCAP_S2_KEY_SEL_IP4_MC_KEY_SEL_SET(VCAP_IS2_PS_IPV4_MC_MAC_ETYPE) | + ANA_ACL_VCAP_S2_KEY_SEL_IP4_UC_KEY_SEL_SET(VCAP_IS2_PS_IPV4_UC_MAC_ETYPE) | + ANA_ACL_VCAP_S2_KEY_SEL_IP6_MC_KEY_SEL_SET(VCAP_IS2_PS_IPV6_MC_MAC_ETYPE) | + ANA_ACL_VCAP_S2_KEY_SEL_IP6_UC_KEY_SEL_SET(VCAP_IS2_PS_IPV6_UC_MAC_ETYPE) | + ANA_ACL_VCAP_S2_KEY_SEL_ARP_KEY_SEL_SET(VCAP_IS2_PS_ARP_MAC_ETYPE); + for (lookup = 0; lookup < admin->lookups; ++lookup) { + for (portno = 0; portno < SPX5_PORTS; ++portno) { + spx5_wr(keysel, sparx5, + ANA_ACL_VCAP_S2_KEY_SEL(portno, lookup)); + } + } +} + +/* Disable lookups per port and set the keyset generation: only IS2 for now */ +static void sparx5_vcap_port_key_deselection(struct sparx5 *sparx5, + struct vcap_admin *admin) +{ + int portno; + + for (portno = 0; portno < SPX5_PORTS; ++portno) + spx5_rmw(ANA_ACL_VCAP_S2_CFG_SEC_ENA_SET(0), + ANA_ACL_VCAP_S2_CFG_SEC_ENA, + sparx5, + ANA_ACL_VCAP_S2_CFG(portno)); +} + static void sparx5_vcap_admin_free(struct vcap_admin *admin) { if (!admin) @@ -138,6 +476,7 @@ int sparx5_vcap_init(struct sparx5 *sparx5) * - Lists of rules * - Address information * - Initialize VCAP blocks + * - Configure port keysets */ ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); if (!ctrl) @@ -147,6 +486,8 @@ int sparx5_vcap_init(struct sparx5 *sparx5) /* select the sparx5 VCAP model */ ctrl->vcaps = sparx5_vcaps; ctrl->stats = &sparx5_vcap_stats; + /* Setup callbacks to allow the API to use the VCAP HW */ + ctrl->ops = &sparx5_vcap_ops; INIT_LIST_HEAD(&ctrl->list); for (idx = 0; idx < ARRAY_SIZE(sparx5_vcap_inst_cfg); ++idx) { @@ -159,6 +500,9 @@ int sparx5_vcap_init(struct sparx5 *sparx5) return err; } sparx5_vcap_block_alloc(sparx5, admin, cfg); + sparx5_vcap_block_init(sparx5, admin); + if (cfg->vinst == 0) + sparx5_vcap_port_key_selection(sparx5, admin); list_add_tail(&admin->list, &ctrl->list); } @@ -174,6 +518,7 @@ void sparx5_vcap_destroy(struct sparx5 *sparx5) return; list_for_each_entry_safe(admin, admin_next, &ctrl->list, list) { + sparx5_vcap_port_key_deselection(sparx5, admin); list_del(&admin->list); sparx5_vcap_admin_free(admin); } diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api.c b/drivers/net/ethernet/microchip/vcap/vcap_api.c index 3eb8aa237c8e..b2c0ddfc0a36 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api.c +++ b/drivers/net/ethernet/microchip/vcap/vcap_api.c @@ -21,6 +21,17 @@ struct vcap_rule_internal { u32 addr; /* address in the VCAP at insertion */ }; +/* Return the list of keyfields for the keyset */ +static const struct vcap_field *vcap_keyfields(struct vcap_control *vctrl, + enum vcap_type vt, + enum vcap_keyfield_set keyset) +{ + /* Check that the keyset exists in the vcap keyset list */ + if (keyset >= vctrl->vcaps[vt].keyfield_set_size) + return NULL; + return vctrl->vcaps[vt].keyfield_set_map[keyset]; +} + /* Update the keyset for the rule */ int vcap_set_rule_set_keyset(struct vcap_rule *rule, enum vcap_keyfield_set keyset) @@ -227,6 +238,24 @@ int vcap_del_rule(struct vcap_control *vctrl, struct net_device *ndev, u32 id) } EXPORT_SYMBOL_GPL(vcap_del_rule); +/* Find information on a key field in a rule */ +const struct vcap_field *vcap_lookup_keyfield(struct vcap_rule *rule, + enum vcap_key_field key) +{ + struct vcap_rule_internal *ri = (struct vcap_rule_internal *)rule; + enum vcap_keyfield_set keyset = rule->keyset; + enum vcap_type vt = ri->admin->vtype; + const struct vcap_field *fields; + + if (keyset == VCAP_KFS_NO_VALUE) + return NULL; + fields = vcap_keyfields(ri->vctrl, vt, keyset); + if (!fields) + return NULL; + return &fields[key]; +} +EXPORT_SYMBOL_GPL(vcap_lookup_keyfield); + static void vcap_copy_from_client_keyfield(struct vcap_rule *rule, struct vcap_client_keyfield *field, struct vcap_client_keyfield_data *data) @@ -253,6 +282,47 @@ static int vcap_rule_add_key(struct vcap_rule *rule, return 0; } +static void vcap_rule_set_key_bitsize(struct vcap_u1_key *u1, enum vcap_bit val) +{ + switch (val) { + case VCAP_BIT_0: + u1->value = 0; + u1->mask = 1; + break; + case VCAP_BIT_1: + u1->value = 1; + u1->mask = 1; + break; + case VCAP_BIT_ANY: + u1->value = 0; + u1->mask = 0; + break; + } +} + +/* Add a bit key with value and mask to the rule */ +int vcap_rule_add_key_bit(struct vcap_rule *rule, enum vcap_key_field key, + enum vcap_bit val) +{ + struct vcap_client_keyfield_data data; + + vcap_rule_set_key_bitsize(&data.u1, val); + return vcap_rule_add_key(rule, key, VCAP_FIELD_BIT, &data); +} +EXPORT_SYMBOL_GPL(vcap_rule_add_key_bit); + +/* Add a 32 bit key field with value and mask to the rule */ +int vcap_rule_add_key_u32(struct vcap_rule *rule, enum vcap_key_field key, + u32 value, u32 mask) +{ + struct vcap_client_keyfield_data data; + + data.u32.value = value; + data.u32.mask = mask; + return vcap_rule_add_key(rule, key, VCAP_FIELD_U32, &data); +} +EXPORT_SYMBOL_GPL(vcap_rule_add_key_u32); + /* Add a 48 bit key with value and mask to the rule */ int vcap_rule_add_key_u48(struct vcap_rule *rule, enum vcap_key_field key, struct vcap_u48_key *fieldval) @@ -264,6 +334,17 @@ int vcap_rule_add_key_u48(struct vcap_rule *rule, enum vcap_key_field key, } EXPORT_SYMBOL_GPL(vcap_rule_add_key_u48); +/* Add a 72 bit key with value and mask to the rule */ +int vcap_rule_add_key_u72(struct vcap_rule *rule, enum vcap_key_field key, + struct vcap_u72_key *fieldval) +{ + struct vcap_client_keyfield_data data; + + memcpy(&data.u72, fieldval, sizeof(data.u72)); + return vcap_rule_add_key(rule, key, VCAP_FIELD_U72, &data); +} +EXPORT_SYMBOL_GPL(vcap_rule_add_key_u72); + static void vcap_copy_from_client_actionfield(struct vcap_rule *rule, struct vcap_client_actionfield *field, struct vcap_client_actionfield_data *data) diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h index 78ac4628fc9f..68248b1b8b01 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h +++ b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h @@ -174,6 +174,8 @@ int vcap_rule_add_key_u32(struct vcap_rule *rule, enum vcap_key_field key, u32 value, u32 mask); int vcap_rule_add_key_u48(struct vcap_rule *rule, enum vcap_key_field key, struct vcap_u48_key *fieldval); +int vcap_rule_add_key_u72(struct vcap_rule *rule, enum vcap_key_field key, + struct vcap_u72_key *fieldval); int vcap_rule_add_action_bit(struct vcap_rule *rule, enum vcap_action_field action, enum vcap_bit val); int vcap_rule_add_action_u32(struct vcap_rule *rule, @@ -182,6 +184,9 @@ int vcap_rule_add_action_u32(struct vcap_rule *rule, /* VCAP lookup operations */ /* Lookup a vcap instance using chain id */ struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid); +/* Find information on a key field in a rule */ +const struct vcap_field *vcap_lookup_keyfield(struct vcap_rule *rule, + enum vcap_key_field key); /* Find a rule id with a provided cookie */ int vcap_lookup_rule_by_cookie(struct vcap_control *vctrl, u64 cookie);